Two new species of extremely poisonous jellyfish have been found off the coast of northwest Australia. Irukandji jellyfish are normally the size of a fingernail, but one of the specimens is the length of an arm.

The smaller of the two is the Malo bella, which was found near Exmouth. The larger one, the Keesingia gigas, was caught in a fishing net off Shark Bay further to the south.